CN2300015Y - Halogen-tungsten lamp electric heating stove - Google Patents
Halogen-tungsten lamp electric heating stove Download PDFInfo
- Publication number
- CN2300015Y CN2300015Y CN 97220928 CN97220928U CN2300015Y CN 2300015 Y CN2300015 Y CN 2300015Y CN 97220928 CN97220928 CN 97220928 CN 97220928 U CN97220928 U CN 97220928U CN 2300015 Y CN2300015 Y CN 2300015Y
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- CN
- China
- Prior art keywords
- heater
- electric heating
- halogen
- zone portion
- tungsten lamp
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a halogen tungsten lamp electrothermal furnace which heats objects by radiation. Because of the limitation of the operation conditions of a high-temperature electrothermal furnace in the prior art, a halogen tungsten lamp adopts a reflection method to heat objects, so the structure is complicated and the cost is high. The furnace of the utility model makes a heating part of a heating body entirely arranged in a furnace chamber; a cool part is mostly or entirely arranged in a furnace liner, and an end sealing block is entirely arranged outside the furnace liner and is ventilated; the end of the heating body is connected with a temperature control device. The utility model reserves the advantages of the halogen tungsten lamp which serves as an electric heating member, and has the advantages of low cost, simple structure and convenient popularization.
Description
The utility model relates to a kind of electrothermal furnace, and is especially a kind of with the electrothermal furnace of halogen tungsten lamp as heating.
It is big that the halogen tungsten lamp pipe has radiation intensity, control signal is replied highly sensitive, anti-oxidant, corrosion-resistant, the high temperature resistant key property that waits, therefore, as heating, electrothermal furnace there is remarkable result in the raising of the main economic and technical norms of thermal technology such as energy utilization rate, operating efficiency, homework precision with aspect improving with it.Yet, in the prior art, because the halogen tungsten fluorescent tube is difficult to be suitable for high-temperature electric heat stove operating condition workpiece and material is heated with forms of radiation, and having adopted reflection way, the complex structure of whole stove and accessory comprises and need apply necessary cooling attachment to reflection part on the one hand, also caused the loss of the energy on the other hand, so its cost height is difficult to promote the use of.
The purpose of this utility model provides a kind of Halogen-tungsten lamp electric heating stove that mainly utilizes forms of radiation that workpiece and material are directly heated, it is being kept under the prerequisite of halogen tungsten fluorescent tube as the various advantages that heating possessed, simplified structure reduces cost, and popularizes and uses.
For achieving the above object, stove and accessory of the present utility model is made up of furnace shell, furnace lining, burner hearth and heater, heater is a halogen tungsten lamp, heater is made up of quartz crust, electric heating element, electric heating element support ring and termination sealing-in piece, electric heating element is contained in the quartz crust by the electric heating element support ring, and the quartz crust two ends are connected with termination sealing-in piece.Electric heating element is made up of cold-zone portion and hot-zone portion, and cold-zone portion is positioned at the two ends of hot-zone portion, and hot-zone portion all is in the burner hearth, and cold-zone portion is most of or all place furnace lining, and termination sealing-in piece all is exposed to outside the furnace lining.
Further, on furnace lining, have the hidden groove of heater installing hole and heater, heater cold-zone portion and hot-zone portion are placed in one respectively.Folded for preventing that hot-zone portion tungsten filament illuminator from weighing down, influence operate as normal, hot-zone portion will keep level when installing substantially; For making uniformity of temperature profile in the burner hearth, hot-zone portion and hearth wall must keep certain spacing.
For the high temperature of protecting termination sealing-in piece to avoid more than 400 ℃ damages, take air-cooled measure in sealing-in piece space of living in, termination, concrete measure is: have the air port on furnace shell.
Utilizing the halogen tungsten lamp colour temperature to select wide characteristic, is the basis of technical solutions of the utility model.The halogen tungsten lamp colour temperature can be up to 3300K, and known and common alloy type heating colour temperature is all below 1700K, according to this fence of making a mistake-Boltzmann law, i.e. and black body radiation power [the Eb=σ T that is directly proportional with 4 powers of its absolute temperature
4σ equals 5.669 * 10 for this fence-Boltzmann constant of making a mistake
-8W/ (m
2K
4)], the utility model and known heating radiant force difference are huge as can be known.According to the planck spectral energy profile: at a certain temperature, monochromatic radioactive force E
bVariation with wavelength X (the μ m of unit) has a maximum E
B λ max, its corresponding wavelength is λ
m, along with temperature raises, E
B λ maxShift to short wavelength regions, and the big portion of global radiation power of black matrix combines in λ
mBetween near wave band, again, the metal surface to the mathematic(al) representation of monochromatic radiation line absorption rate α is:
(equation the right λ-wavelength μ m, the unit resistance Ω cm of R-metal), by formula as can be known, the monochromatic absorptivity of metal surface increases with shortened wavelengths, is λ according to Wien equation
mT=2897.6 (μ mK), when the colour temperature of heating (T) was got high numerical value, it carries out radiation heating to metal material was favourable; At other material heating, can at first survey its absorption spectrum, seek out the pairing wavelength of maximum, as nearly all organic matter and macromolecular material, corresponding 3 μ m or 6 mum wavelength rays all have extremely strong absorption band, can try to achieve halogen tungsten lamp work colour temperature by Wien equation.According to the heating object spectral absorption characteristics, to carry out Wavelength matched heating, thereby increase work efficiency and energy use efficiency, the wide colour temperature of halogen tungsten lamp selects to provide for it condition.Inverse square law is the (E=I/L that square is inversely proportional to of illumination and distance
2I is a light intensity), explained that then the high colour temperature of halogen tungsten lamp is beneficial to the interior warm field uniformity of stove and improves phenomenon.The utility model makes these characteristics of halogen tungsten lamp obtain practical application in this electrothermal furnace by the colour temperature regulation device is connected on the heater.
By above processing, Halogen-tungsten lamp electric heating stove designs simplification, cost are reduced, be suitable for producing in batches and the large-scale promotion use.
Further specify below in conjunction with drawings and Examples:
Fig. 1 is the partial sectional view of the utility model embodiment;
Fig. 2 is the I-I cutaway view of Fig. 1.
This accompanying drawing has only indicated in the composition of the utility model Halogen-tungsten lamp electric heating stove and the structure difference with common electrothermal furnace, as other parts of Electricthermal furnace, and can be referring to prior art, as Chinese patent utility model 2201644.
In Fig. 1, Halogen-tungsten lamp electric heating stove is made up of furnace shell 1, furnace lining 2, burner hearth 3 and heater 10, and heater 10 is a halogen tungsten lamp, and heater 10 is made up of quartz crust 11, electric heating element cold-zone portion 12, hot-zone portion 13, electric heating element support ring 14 and termination sealing-in piece 15; Electric heating element cold-zone portion 12 not luminous current-conducting bar two ends is contained in the quartz crust 11 by electric heating element support ring 14 with hot-zone portion 13 tungsten filament illuminators respectively, quartz crust 11 two ends are connected with termination sealing-in piece 15, cold-zone portion 12 is positioned at the two ends of hot-zone portion 13, hot-zone portion 13 all is in the burner hearth 3, cold-zone portion 12 is most of or all place furnace lining 2, and termination sealing-in piece 15 all is exposed to outside the furnace lining 2.
Dress sealing-in molybdenum foil 16 and molybdenum rod lamp angle 17 in the termination sealing-in piece 15, molybdenum rod lamp angle 17 welding flexible circuit conductors 18, flexible circuit conductor 18 is connected in the binding post 4; Cold-zone portion 12 two ends respectively with hot-zone portion 13 and 16 spot welding of sealing-in molybdenum foil, adopt said structure, it is rationally reliable that circuit is connected, long service life.
Ventilating opening 5 is arranged on the furnace shell 1, when termination sealing-in piece 15 environment temperatures of living in surpass 400 ℃, force cooling to wherein drying by ventilating opening 5.
Have the hidden groove 7 of heater installing hole 6 and heater on the furnace lining, heater hot-zone portion 13 can be in the hidden groove 7 of heater, to exempt from the damage of colliding with of workpiece to be heated; Heater cold-zone portion 12 is positioned in the heater installing hole 6 by fastener 8.Heater installing hole 6 be shaped as wedge shape, fastener 8 is the wedge shape flexible piece, this wedge shape flexible piece is divided into two parts symmetrical along shaft section, tapering matches with heater wedge shape installing hole tapering.
The length of cold-zone portion 12 has certain scope, the longlyest can not influence electrothermal furnace efficient, and the shortest termination sealing-in piece 15 environment temperatures of living in that can not make between furnace lining 2 and the furnace shell 1 are too high.For this reason, the length of cold-zone portion 12 each end should be 15%～50% of hot-zone portion 13 length, and optimum is 30%～36%.
Heater hot-zone portion 13 and horizontal sextant angle be less than 8 °, and with the distance of burner hearth 3 walls greater than 4mm, it is folded to prevent that on the one hand the tungsten filament illuminator from weighing down, and guarantees uniformity of temperature profile in the burner hearth on the other hand.
Further, be fixed on the electrothermal furnace keel frame 19 with the cell cube of furnace lining installation anchor 9, and fill in the installation anchoring part hole 21 of furnace lining 2 with the flexible thermal resistance shutoff 20 of ceramic fibre with furnace lining 2; There is the gap between the cell cube of adjacent furnace lining 2, should be filled with ceramic fibre 22.
When metal material was heated, the colour temperature of tungsten filament illuminator should be less than 2450K; Should at first survey its absorption spectrum when other materials is heated, the pairing wavelength of maximizing is determined its colour temperature according to Wien's law then.
Claims (10)
1. Halogen-tungsten lamp electric heating stove, form by furnace shell, furnace lining, hearth body and heater, heater is a halogen tungsten lamp, heater is made up of quartz crust, electric heating element, electric heating element support ring and termination sealing-in piece, electric heating element is contained in the quartz crust by the electric heating element support ring, the quartz crust two ends are connected with termination sealing-in piece, it is characterized in that: electric heating element is made up of cold-zone portion and hot-zone portion, cold-zone portion is positioned at the two ends of hot-zone portion, hot-zone portion all is in the burner hearth, cold-zone portion is most of or all place furnace lining, and termination sealing-in piece all is exposed to outside the furnace lining.
2. dress sealing-in molybdenum foil and molybdenum rod lamp angle in the Halogen-tungsten lamp electric heating stove according to claim 1, termination sealing-in piece, molybdenum rod lamp welded corner joint flexible circuit conductor, flexible circuit conductor is connected in the binding post.
3. Halogen-tungsten lamp electric heating stove according to claim 1, cold-zone portion two ends respectively with hot-zone portion and the spot welding of sealing-in molybdenum foil.
4. electrothermal furnace such as halogen tungsten according to claim 1, it is characterized in that: the heater end connects the colour temperature regulation device.
5. Halogen-tungsten lamp electric heating stove according to claim 1 is characterized in that: ventilating opening is arranged on the furnace shell.
6. Halogen-tungsten lamp electric heating stove according to claim 1 is characterized in that: have the hidden groove of heater installing hole and heater on the furnace lining.
7. Halogen-tungsten lamp electric heating stove according to claim 6 is characterized in that: heater hot-zone portion is not in the hidden groove of heater, and heater cold-zone portion is positioned in the heater installing hole by fastener.
8. Halogen-tungsten lamp electric heating stove according to claim 6 is characterized in that: the heater installing hole be shaped as wedge shape, fastener is for being divided into the flexible piece that two parts, tapering match with heater wedge shape installing hole tapering along center line.
9. electrothermal furnace such as halogen tungsten according to claim 7 is characterized in that cold-zone, two ends minister's degree is respectively 30%～36% of hot-zone minister's degree.
10. halogen tungsten lamp heating cooking stove according to claim 7 is characterized in that: heater hot-zone portion and horizontal sextant angle be less than 8 °, and with the distance of hearth wall greater than 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97220928 CN2300015Y (en) | 1997-07-29 | 1997-07-29 | Halogen-tungsten lamp electric heating stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97220928 CN2300015Y (en) | 1997-07-29 | 1997-07-29 | Halogen-tungsten lamp electric heating stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2300015Y true CN2300015Y (en) | 1998-12-09 |
Family
ID=33936470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97220928 Expired - Fee Related CN2300015Y (en) | 1997-07-29 | 1997-07-29 | Halogen-tungsten lamp electric heating stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2300015Y (en) |
-
1997
- 1997-07-29 CN CN 97220928 patent/CN2300015Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Leidi Aisen New Technology Development Co., Beijing Document name: payment instructions |
|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Leidi Aisen New Technology Development Co., Beijing Document name: Notice of termination |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |